Wire-twisting device



A. A. GAMBLE.-

WIRE- TWISTING DEVICE.

APPLICATION FILED JUNE 18, I918.

Patented Julie 1, 1920.;

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127s zlttarzzey ans AUSTIN A.,GAMIBLE, or ABTESIA, cnLrronnrn, nssren on T0 GUY B. GAMBLE, or

' ARTESIA, CALIFORNIA.

wmn-rwisrnve nnvrcn;

To all whom it may concern:

Be it known that I, AUSTIN A. GAMBLE, a citizen of the United States, residing at Artesia, in the county of Los Angeles and State of California, have invented new and useful Improvements in l/Vire-Twisting Devices, of which the following is a speci- This invention relates to wire twisting brace wrenches,'and more particularly to wrenches adapted for engaging andtwisting together strands of wire in fence construction, in the building up or assembling of the bonding or reinforcement of concrete fire-proof construction, and in other manipulations of a similar character.

The invention has for its object to provide an improved device of this character which will be generally superior in point of relative simplicity and inexpensiveness of construction, taken in connection with positiveness in operation, convenience in use, durability, compactness in form, and speed in operation, and which will be generally superior in efficiency and serviceability. 7 7

With the above and other objects in View, the invention consists in the novel and useful provision, formation, combination, association and relative arrangement of parts, members and features, all as hereinafter described, shown in the drawing and finally pointed out in claims.

In the drawing, Figurel is a side view showing the improved brace wrench, embodying the invention, the same being shown as applied to wire ends and in the operation of twisting the same together, to unite fire-proof reinforcement rods;

Fig. 2 is a separate view of a twisted wire formation shown in Fig. 1;

Fig. 3 is a View of the work-engaging member of the device with parts removed to expose the inner working features;

Fig. l is a fragmental side view of the work-engaging member last referred to, part being broken away to show the inner construction 1 Fig. 5 is a face view of one of the parts of the work-engaging member;

Fig. 6 is an edge view of such part;

Fig. 7 is a fragmentary view of the end portion of the operating member which is associated with the work-engaging member referred to;

Specification of Letters Patent.

' Patented June 1, 1920.

Application filed June 18, 1918. Serial No. 240,588.

Fig. 8 is a view similar to Fig. 3, showing more of the parts in position, looking at the same from the reverse direction;

and

Fig. 9 is a side edge view of certain of the parts shown in Fig. 8.

Corresponding parts and features in all the figures are designated by the same ref erence characters. 7

The brace wrench shown in the 1 2, for operating the brace. The end portion, 10, passes through registering open-.

ings, 13, in casing members 14 and 15, which fit together in lap joint connection, as at 16, and provide a workingspace within which is disposed the cam member, 0, and the dogs, a and b. The casing members are held together by screws, 17, passing through registering openings in the'casing members, 14 and 15, such screws likewise passing freely through opening substantially central of the arcuate dogs, wand?) and serving as pivotal bearings for such dogs. Such an opening is shown at 18, in. Fig. The cam member '0 has diametrically disposed rounded heads 17 and 17., which respectively engage with the inner curved surfaces of the arcuate dogs a and b.

In each of the casing members 14: and 15, is a slot extending inward of the casing member, in a chord of its circumference, and substantially at opposite sides of such member, such slots being indicated at and each of the slots 19 in-each of the members lying over one of the other slots, in the other member. These slots are slightly offset at their inner ends, as at 19 and the dogs a and b have slightly chamfered end portions 20, which are adapted to ride over such offset end portions 19 of the slots 19, and grip in such end portions, and between the same and such chamfered end portions, the ends 21 of the wire, or such other objects, as are introduced through such slots, into position to be so gripped. Therehold, 12, and, while firmly holding the ends drawing as embodying the invention ,COHIPIISGS a of the wire or other objects to be twisted, giving them a thorough and suflicient twisting, such as to bindthem firmly'about concrete reinforcement members 22, such as shown in Fig. 1. The screws 17, or the casing members 14 and 15, in assemblage,

I with the dogs and cam member confined It is manifest that many variations may be made in departure from this specific showing of the drawing and the specific disclosures of the accompanying description andstatement, without departing from the true spirit of the invention and a fair interpretation thereof.

Having thus disclosed my. invention, I claim and desire to secure by Letters Patent: 1. A wire twisting tool including a head having slots in edge portions thereof, dogs .pivotally mounted upon the head and adapted to override the slots to grip wires at the inner ends thereof, a stem rotatably mounted upon the head, a cam applied to the stem and arranged to operate the dogs, and a handle upon the stem.

' 2. A wire twisting tool including a hollow head having wire receiving slots in edge.

portions thereof, dogs pivotally mounted within the hollow head and adapted to override the slots to grip wires at the inner ends thereof, a stem rotatably mounted upon the hollow head and entering the same, a cam arranged withinthe hollow head and rigid with the stem, said cam engaging the dogs to actuate the same, and a handle applied to the stem.

3. A wire twisting tool including a head having Wire receiving slots therein, U- shaped dogs pivotally mounted upon the head and one arm of each of the dogs being adapted to override one of the slots and grip a wire at the inner end thereof, a stem rotatably mounted upon the head, and a cam applied to the stem and having portions thereof received within each of the U-shaped dogs for cooperation with the respective arms thereof to swing the dogs into and out of operative position, and a handle upon the stem for operating the tool.

4:. A device of the character disclosed,

comprising a casing, dogs pivoted in said casing, said casing being provided with opposed slots, adapted to be over-ridden 1n part by said dogs, and a cam member in said casing for operating said dogs; a brace being provided by which said cam member is operated.

5. A device of the character disclosed, comprising a casing, dogs 'PlVOfiGdlIl sa1d casing, said casingbeing provided with op- I posed'slots, adapted to be over-ridden in part by said dogs, and a cam member in said casing for operating said dogs; a brace 6. A device of the character disclosed,

comprising a casing, dogs pivoted in said casing, sa1d casing being provided with opposed slots, adapted to be over-ridden inpart by said dogs, and a cam member. in sa1d casing for operating sa1d dogs; a brace being provided by which said cam member is operated; said dogs being arcuate in form and said cam member having opposed.

curved heads engaging respectively with said arcuate dogs. g I

7. A device of the character disclosed,

comprising a casing, dogs pivoted'in-said casing,.said caslng being provided with opposed slots, adapted to'be over-ridden in part by said dogs, and a cammember in said casing for operating said dogs; a brace being provided by which said cam member is operated; said dogs being arcuate in form and said cam memberhaving opposed curved heads engaging respectively with said arcuate dogs; means being provided for holding said casing members together and likewise to constitute pivot bearings for said dogs.

8. A device of the character disclosed, comprising a casing, dogs pivoted in said casing, said casing being provided with opposed slots, adapted to be over-ridden in part by said dogs, and a cam-member in said casing for operating said dogs; a brace being provided upon whichsaid cam member is operated; said dogs being arcuate in form and said cam member having opposed curved heads engaging respectively with said arcuate dogs; means being provided, for holding said casing members together and likewise to constitute pivot bearings for said dogs;.said means likewise varying the frictional engagement of said cam member with said dogs.

In testimony whereof, I have signed my name to this specification in the presence of two subscribing witnesses.

- AUSTIN A. GAMBLE. Witnesses: V

WILLIS S. MITCHELL, J. SHUT'r. 

